Dear Dickson:
Before we jump into conclusions, have you tried to analyse your computer with another antivirus software?
I find NOD32 an excellent and stable antivirus. I am a happy user and have also migrated many of my clients to NOD32, but these things happen, no matter what anivirus you have. Golden rule: The Polio Vaccine will only protect you from Polio but if you face chicken pox it is useless.
What I am trying to say here is that you need to configure your antivirus to do exactly what you need it to do and NOD32 Configuring Interface is very user friendly. Perhaps your virus database was not updated at the time this happened.
When it comes to "Unfamiliar messages Poping up" it could also be spyware related. I strongly recommend you to use free AVG antyspyware. You may dowload it from free.grisoft.com You may combine this anti spyware software with another one of your choice in order to double check your PC for infections.
If after you resolve this situation you decide to continue working with NOD32 do take a long trip through all its configuration windows. You will find an excellent antivirus programme within.
Please let us know the results and good luck.

Some antivirus still work background after deactivite thats.
Is two solutions, the first is to uninstall and reinstall your antivirus and
the seccond is to make your way in safe mode,
by pressing before load the logo of xp in startup continueus the button
"F8"...

Dear You Can solve this issue with in 2 minutes. What you need to do is that.
1.Restart Your computer in Safe Mode.
2. Go to the accessories and restore your system to earlier date.
your system will reboot automatically and the Same is resolved